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显示 1-30 共 141 条结果 关于 "155721" 范围 论文
Henrik Kempe et al.
Pharmaceutical research, 32(2), 375-388 (2014-08-12)
To develop and evaluate molecularly imprinted nanocarriers for sustained release of erythromycin in physiological buffer media. Erythromycin-imprinted poly(methacrylic acid-co-trimethylolpropane trimethacrylate) nanocarriers and corresponding control nanocarriers were prepared by free-radical precipitation polymerization. The nanocarriers were characterized by transmission electron microscopy, dynamic
Ivanka Dakova et al.
Journal of hazardous materials, 231-232, 49-56 (2012-07-10)
In this study new Hg(II) core-shell imprinted sorbents (Hg(II)-IIPs) were prepared and tested for speciation and determination of Hg in wine. The silica gel, chemically modified with 3-(trimethoxysilyl)propyl methacrylate (TSPM) was used as supporting material. The Hg(II)-imprinted polymer layer was
E Franco-Marquès et al.
Journal of biomedical materials research. Part B, Applied biomaterials, 103(5), 992-1001 (2014-09-12)
New formulations of acrylic bone cements for bone defect reparation, based on self-hardening methyl methacrylate (MMA)/methacrylic acid (MAA), with a high capacity for protein delivery, have been developed. The self-curing formulations were prepared by partial substitution of solid phase PMMA
Ortensia Ilaria Parisi et al.
Pharmaceutical development and technology, 18(5), 1058-1065 (2012-04-25)
Flavonoids preservation and release. Synthesis of a polymeric material able to prevent thermal and photo degradation of a flavonoid model compound, such as (+)-catechin, and suitable for a controlled/sustained delivery of this molecule in gastro-intestinal simulating fluids. Methacrylic acid (MAA)
Macro-micro relationship in nanostructured functional
Composites
Composites
Zanotto A, et al.
Express Polymer Letters, 6(5), 410-416 (2012)
Xi Yu et al.
Food chemistry, 299, 125144-125144 (2019-07-20)
Magnetic nanoparticles were synthesised to extract Sudan dyes from chilli powders. The adsorbents used were magnetic ferroferric oxide nanoparticles coated with polystyrene. The extraction procedures for Sudan dyes comprised liquid-solid extraction and magnetic solid phase extraction. The conditions were optimised
Li Hui Tan et al.
International journal of nanomedicine, 10, 4883-4895 (2015-09-09)
Conventional in vitro culture studies on flat surfaces do not reproduce tissue environments, which have inherent topographical mechanical signals. To understand the impact of these mechanical signals better, we use a cell imprinting technique to replicate cell features onto hard
Kentaro Nagane et al.
International journal of pharmaceutics, 493(1-2), 55-62 (2015-07-23)
The objective of this study is to prepare and characterize solid dispersions of nifedipine (NP) using porous spherical silicate micro beads (MB) that were approximately 100 μm in diameter with vinylpyrrolidone/vinyl acetate copolymer (PVP/VA) and a Wurster-type fluidized bed granulator.
Giuseppina Campisi et al.
Current pharmaceutical design, 18(34), 5411-5420 (2012-05-29)
Since the activity of several conventional anticancer drugs is restricted by resistance mechanisms and dose-limiting side-effects, the design of formulations for local application on malignant lesions seems to be an efficient and promising drug delivery approach. In this study, the
Synthesis of graft copolymers of poly(methacrylic acid)-g-poly(?-caprolactone) by coupling ROP and RAFT polymerizations
Kiehl J, et al.
Polymer, 53(3), 694-700 (2012)
Raquel Gutierrez-Climente et al.
Journal of chromatography. A, 1508, 53-64 (2017-06-11)
The work presented here explores the grafting of molecularly imprinted nanoparticles (MIN) on silica beads for the development of new chiral stationary phases (CSP). Both solid-phase imprinting and precipitation polymerisation were tested for MIN synthesis though the latter approach was
Jinghan Tian et al.
The Analyst, 140(15), 5301-5307 (2015-06-16)
A core-shell structured molecularly imprinted polymer on upconverting nanoparticles (UCNPs@MIP) was synthesized for the fluorescence (FL) sensing of sulfamethazine (SMZ). Hexagonal UCNPs were synthesized by the solvothermal method, then coated with a thin silica shell and modified with vinyl groups.
Aikaterini-Foteini Metaxa et al.
Journal of colloid and interface science, 384(1), 198-206 (2012-07-17)
Biocompatible hollow poly(methyl acrylic acid-co-N-isopropylacrylamide-co-ethyleneglycol dimethacrylate)@cellulose succinate (P(MAA-co-NIPAAM-co-EGDMA)@CS) microspheres have been synthesized by employing uniform silica-MPS microspheres as template. Silica spheres were synthesized via Stöber method involving tetraethyl orthosilicate. The surface of resulting silica Stöber microspheres was modified using 3-methacryloxypropyltrimethoxysilane
Hai-Bo He et al.
Journal of chromatography. A, 1361, 23-33 (2014-08-31)
This paper reports a nanomagnetic polyhedral oligomeric silsesquioxanes (POSS)-directing strategy toward construction of molecularly imprinted hybrid materials for antibiotic residues determination in milk samples. The imprinted polymeric layer was facilely obtained through the copolymerization of active vinyl groups present on
Xinjiong Ni et al.
Journal of chromatography. A, 1370, 263-269 (2014-12-03)
A novel polymeric micelle, formed by random copolymer poly (stearyl methacrylate-co-methacrylic acid) (P(SMA-co-MAA)) has been used as pseudostationary phase (PSP) in electrokinetic chromatography (EKC) for simultaneous and rapid determination of 11 kinds of water- and fat-soluble vitamins in this work.
Michael C Koetting et al.
International journal of pharmaceutics, 471(1-2), 83-91 (2014-05-24)
pH-Responsive hydrogels comprised of itaconic acid copolymerized with N-vinylpyrrolidone (P(IA-co-NVP)) were synthesized and tested as carriers for the oral delivery of high isoelectric point (pI) exhibiting therapeutic proteins. Swelling studies show that P(IA-co-NVP) hydrogels exhibit significantly greater and faster pH-responsive
H Greim et al.
Chemosphere, 31(2), 2637-2659 (1995-07-01)
BUA compiled the available data on toxicity and ecotoxicity for several acrylic and methacrylic acid esters and their corresponding acids. A comparison of these data revealed a qualitative similarity in the toxicological and ecotoxicological properties of the compounds considered. The
João M S de Barros et al.
Journal of pharmaceutical sciences, 103(7), 2022-2032 (2014-05-08)
Live bacterial cells (LBCs) are administered orally as attenuated vaccines to deliver biopharmaceutical agents and as probiotics to improve gastrointestinal (GI) health. However, LBCs present unique formulation challenges and must survive GI antimicrobial defenses including gastric acid after administration. We
Baokun Tang et al.
Journal of chromatographic science, 53(5), 836-840 (2014-09-18)
Three flavones (quercetin, myricetin and amentoflavone) were extracted from Chamaecyparis obtusa leaves using deep eutectic solvents (DESs) as additives to conventional extractions solvents. Sixteen DESs were synthesized from different salts and hydrogen bond donors. In addition, C. obtusa was extracted
Piotr Luliński et al.
Journal of chromatography. A, 1420, 16-25 (2015-10-16)
In this paper, the optimized synthesis and detailed characterization of novel imprinted material for selective extraction of 2-aminothiazoline-4-carboxylic acid (ATCA) were described. The prepolymeric system contained 1-allyl-2-thiourea and ethylene glycol dimethacrylate in methanol, tetrahydrofuran and dimethyl sulfoxide porogenic mixture and
Mahmoud Seifi et al.
International journal of pharmaceutics, 471(1-2), 37-44 (2014-05-06)
In the present work a series of tramadole imprinted micro- and nanoparticles were prepared and study their recognition properties. Methacrylic acid (MAA), as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a cross-linker and different solvents (chloroform, toluene and acetonitrile
R Osorio et al.
Journal of dental research, 93(12), 1258-1263 (2014-09-18)
To obtain more durable adhesion to dentin, and to protect collagen fibrils of the dentin matrix from degradation, calcium- and phosphate-releasing particles have been incorporated into the dental adhesive procedure. The aim of the present study was to incorporate zinc-loaded
Deli Xiao et al.
Journal of chromatography. A, 1274, 44-53 (2013-01-08)
A novel composite imprinted material, on the basis of magnetic carbon nanotubes (MCNTs)-incorporated layer using gatifloxacin as a template, methacrylic acid as a functional monomer, and ethylene glycol dimethacrylate as a cross-linker, was successfully synthesized by a surface imprinting technique.
Perumberkandgai A Vivekanand et al.
Molecules (Basel, Switzerland), 18(2), 2419-2437 (2013-02-23)
Currently, ingenious new analytical and process experimental techniques which are environmentally benign techniques, viz., ultrasound irradiation, have become immensely popular in promoting various reactions. In this work, a novel soluble multi-site phase transfer catalyst (PTC) viz., 1,4-bis-(propylmethyleneammounium chloride)benzene (BPMACB) was
Marieta Constantin et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 62, 86-95 (2014-05-23)
A dual drug delivery system based on a "biosensor" (pH-sensitive unit) and a delivery component (thermosensitive hydrogel) was developed. The pH/thermosensitive hydrogel is able to restore the thermosensitive characteristics after electrostatic interaction of the pH-sensitive units with selected biologically active
D Bratkowska et al.
Journal of chromatography. A, 1225, 1-7 (2012-01-10)
A monolithic, hydrophilic stir bar coating based upon a copolymer of methacrylic acid and divinylbenzene [poly(MAA-co-DVB)] was synthesised and evaluated as a new polymeric phase for the stir bar sorptive extraction (SBSE) of polar compounds from complex environmental water samples.
Gianfranco Decandia et al.
Pharmaceutics, 12(3) (2020-03-04)
A coating consisting of a copolymer of methacrylic acid and ethylene glycol dimethacrylate was deposited over a gentamicin film by initiated chemical vapor deposition with the aim of controlling the drug release. Gentamicin release in water was monitored by means
Foteini A Trikka et al.
Amino acids, 43(5), 2113-2124 (2012-04-25)
Molecularly imprinted polymers (MIP) for histamine using methacrylic acid were developed and recognition mechanisms were thoroughly characterized for the first time in this study. The binding affinity of imprinted polymer with structurally related compounds was studied in organic and aqueous
Abhishek Chauhan et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 985, 110-118 (2015-02-11)
Nano-sized molecularly imprinted polymer (nMIP) was synthesized through precipitation polymerization method and used it as solid phase extraction (SPE) sorbent for the selective and simultaneous extraction of hydroxylated metabolites of polycyclic aromatic hydrocarbons (PAHs) from urine followed by ultra-high performance
Jeong Hun Park et al.
Biofabrication, 6(2), 025003-025003 (2014-03-25)
One of the major issues in tissue engineering has been the development of three-dimensional (3D) scaffolds, which serve as a structural template for cell growth and extracellular matrix formation. In scaffold-based tissue engineering, 3D printing (3DP) technology has been successfully
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